You could also use NVDA installed on a USB memory stick. You’d have to know the drive letter of the USB drive in order to start NVDA, but you could press Windows R to bring up the run command, and then try different drive letters, i.e. E:\NVDA. If this doesn’t work, press escape, then Windows R followed by F:\NVDA, etc.

The nice thing about running NVDA from a thumb drive is, unlike Jaws, you don’t need to install video intercept or anything else.

You, of course, will need to have Jaws, or another screen reader  running in order to download and install the portable version of NVDA.

HTH.

Russell